TAG Heuer TH20-08

The TH20-08 is an automatic chronograph caliber from TAG Heuer, part of the TH20 family. It powers the Carrera Chronosprint Glass Box 42mm watches introduced in 2023. The movement features a specialized chronograph display that shows quarters of a second for the first 10 seconds of timing, half-second precision between 10 and 15 seconds, then returns to standard one-second increments—a function designed to evoke the acceleration behavior of a sports car. It is fitted in stainless steel and gold variants of the Carrera Chronosprint.